Monosaccharide classification from drawn structures

14 questions on Monosaccharide classification from drawn structures from the Biomolecules chapter: 3 NEET level, 5 JEE Main, 6 JEE Advanced. Each one opens with its answer and solution.

• The monosaccharide shown is classified as NEET level, drawn structure
• The open-chain sugar shown is best classified as NEET level, drawn structure
• Taking the carbonyl group as C-1 at the top, the sugar shown is best described as NEET level, drawn structure
• The reference compound shown has the D configuration. Which of Structures A to D is a D-aldopentose? JEE Main level, drawn structure
• The reference compound shown is the simplest ketose. Which of Structures A to D is a ketohexose? JEE Main level, drawn structure
• The sugar shown is oxidised by bromine water. Which of Structures A to D is the major product? JEE Main level, drawn structure
• The sugar shown is heated for a long time with excess HI and red phosphorus. Which of Structures A to D is the final product? JEE Main level, drawn structure
• Consider the constitution of the open-chain sugar shown. Counting configurational stereoisomers only (all stereocentres treated as independent, no meso forms ar... JEE Main level, drawn structure
• The sugar shown is oxidised with bromine water and the acid formed loses one molecule of water intramolecularly on heating to give a six-membered lactone. What ... JEE Advanced level, drawn structure
• The sugar shown is reduced with NaBH4 in water. The carbonyl carbon becomes a new stereocentre and attack is possible from either face. How many distinct aldito... JEE Advanced level, drawn structure
• The reference compound shown is a triose. Structures A to D are the four D-aldopentoses. Each is oxidised with hot dilute HNO3 to the aldaric (dicarboxylic) aci... JEE Advanced level, drawn structure
• The cyclic sugar shown is converted back to its open-chain form by ring opening. Which statement describes the open-chain sugar? JEE Advanced level, drawn structure
• Which of the following statements about the open-chain sugar shown is/are correct? JEE Advanced level, drawn structure
• The ketohexose shown is described by (i) its family (D or L, from the highest-numbered stereocentre) and (ii) the number of stereoisomers of its constitution (c... JEE Advanced level, drawn structure